EP3027351A2 - Flux pour soudage au laser - Google Patents

Flux pour soudage au laser

Info

Publication number
EP3027351A2
EP3027351A2 EP14752690.9A EP14752690A EP3027351A2 EP 3027351 A2 EP3027351 A2 EP 3027351A2 EP 14752690 A EP14752690 A EP 14752690A EP 3027351 A2 EP3027351 A2 EP 3027351A2
Authority
EP
European Patent Office
Prior art keywords
weight
flux
composition
metal
percent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14752690.9A
Other languages
German (de)
English (en)
Other versions
EP3027351B1 (fr
Inventor
Gerald J. Bruck
Ahmed Kamel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Energy Inc
Original Assignee
Siemens Energy Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Energy Inc filed Critical Siemens Energy Inc
Publication of EP3027351A2 publication Critical patent/EP3027351A2/fr
Application granted granted Critical
Publication of EP3027351B1 publication Critical patent/EP3027351B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/34—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material comprising compounds which yield metals when heated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K25/00—Slag welding, i.e. using a heated layer or mass of powder, slag, or the like in contact with the material to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34—Laser welding for purposes other than joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34—Laser welding for purposes other than joining
    • B23K26/342—Build-up welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/32—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C
    • B23K35/327—Selection of soldering or welding materials proper with the principal constituent melting at more than 1550 degrees C comprising refractory compounds, e.g. carbides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • B23K35/3602—Carbonates, basic oxides or hydroxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • B23K35/3603—Halide salts
    • B23K35/3605—Fluorides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • B23K35/3607—Silica or silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • B23K35/361—Alumina or aluminates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/362—Selection of compositions of fluxes

Definitions

  • This invention relates generally to the field of metals joining, and more
  • Welding processes vary considerably depending upon the type of material being welded. Some materials are more easily welded under a variety of conditions, while other materials require special processes in order to achieve a structurally sound joint without degrading the surrounding substrate material.
  • Some superalloy material welding applications can be performed using a chill plate to limit the heating of the substrate material; thereby limiting the occurrence of substrate heat affects and stresses causing cracking problems.
  • this technique is not practical for many repair applications where the geometry of the parts does not facilitate the use of a chill plate.
  • the present inventors have developed a flux material and a materials joining process that can be used successfully to join and/or to repair the most difficult to weld superalloy materials and other alloy materials.
  • Embodiments of the inventive process advantageously apply a powdered flux material over a superalloy substrate during a laser melting and re-solidifying process.
  • the powdered flux material is effective to provide beam energy transmission and selective trapping, impurity cleansing,
  • FIG. 1 illustrates a process where a layer of cladding 10 of a superalloy material is being deposited onto a superalloy substrate material 12 at ambient room temperature without any preheating of the substrate material 12 or the use of a chill plate.
  • the substrate material 12 may form part of a gas turbine engine blade, for example, and the cladding process may be part of a repair procedure in some embodiments.
  • a layer of granulated powder 14 is pre-placed on the substrate 12, and a laser beam 16 is traversed across the layer of powder 14 to melt the powder and to form the layer of cladding 10 covered by a layer of slag 18.
  • the cladding 10 and slag 18 are formed from the layer of powder 14 which includes a layer of powdered superalloy material 20 covered by a layer of powdered flux material 22.
  • the slag 18 helps to shape and support the pool of molten metal to keep it close to a desired 1/3 height/width ratio. Such slag shape control and metal support further reduces solidification stresses that would otherwise be necessarily borne by the solidifying metal alone.
  • the flux material 22 provides a cleansing effect for removing trace impurities such as sulfur and phosphorous that contribute to weld solidification cracking. Such cleansing may include deoxidation of the metal powder. Because the flux powder is in intimate contact with the metal powder, it is especially effective in accomplishing this function.
  • Such known fluxes are also used with a solid wire, cored wire or strip electrode. Consequently, such known fluxes are generally formulated to include ingredients to enhance processing with such solid filler metal forms.
  • coated electrodes often require specific ingredients (e.g., sodium silicate, potassium silicate, sugar, dextrose) to find the flux mix and additional ingredients (e.g., glycerin, kaolin, talc, mica) to enhance extrudability over a wire and attachment thereon.
  • additional ingredients e.g., glycerin, kaolin, talc, mica
  • flux cored wires must have very fine mesh flux ingredients to fit the core volume.
  • titanium dioxide is often used for arc stabilization.
  • At least two of the commercially-available fluxes described above include titanium dioxide.
  • the proposed flux for laser processing has no need for such stabilization. Therefore, titanium dioxide and other agents employed in known flux materials to affect electrical properties (e.g., potassium silicate, sodium silicate, rutile and potassium titanate) may be excluded from the present flux materials.
  • agents affecting electrical properties such as titanium dioxide
  • the proportion of such agents may differ considerably from proportions known to be suitable for enhancing electrical properties.
  • arc stabilizers include compounds having low dissociation energy and ionization potential (e.g. K 2 O, Na 2 O and Li 2 O). Such compounds are often not well suited to flux materials of the present disclosure due to their propensity to undergo dissociation to form an optical "plasma" that prevents the laser energy from being absorbed and transferred to the process location. Such stabilizers and plasma generators may be excluded from the presently disclosed flux materials for laser processing. In some embodiments flux materials of the present disclosure do not contain substantial amounts of K 2 O, Na 2 O and Li 2 O— meaning that less than 0.5% by weight of these compounds (individually or collectively) is contained. In some
  • fluorides can produce an erratic arc in conventional weld processing with fluoride-bearing fluxes. Because no arc is involved in laser processing, fluorides may be included (even in relatively enriched proportions) in flux materials of the present disclosure to control viscosity and scavenging effects that are important to laser processing.
  • Tests have been conducted with satisfactory results using flux material crushed to smaller than commercially available sizes, such as to a size range of 105 - 841 microns (-20/+150 Tyler mesh) for pre-placed powder applications and to a size of less than 105 microns (-150 Tyler mesh) for feed powder applications.
  • Optimum volume ratio of flux to alloy powder is of the order of 1 : 1 , however a range from 3:2 to 2:3 has been demonstrated.
  • powdered metal is to be mixed with flux, it can be important to optimize size to ensure good mixing.
  • the inventors have found and hereby teach that for mixing applications, commercially available fluxes need to be first crushed. For newly manufactured fluxes the mesh range should overlap the mesh range of the powdered metal. If powdered metal is to be made with flux as a constituent (conglomerate particles), then such mesh considerations are not as important. If powder metal and flux is to be fed, then the flux needs to closely match the mesh range of the metal powder to ensure good feeding. If flux is to be included in the core of a wire, it must meet the mesh requirement for such flux cored wire manufacture.
  • phosphorous, lead, and bismuth are sometimes added to improve creep and rupture strength and to refine grain boundaries.
  • All of these elements (and sometimes in combination with other superalloy constituents including silicon, carbon, oxygen and nitrogen) can be associated with solidification cracking (aka hot cracking or liquation cracking).
  • solidification cracking aka hot cracking or liquation cracking.
  • sulfur causes such cracking by way of the formation of low melting point eutectic phases (e.g. Ni 3 S 2 ) at the last locations to solidify. Such low melting point films cannot sustain contraction stresses during solidification and, therefore, cracking results. Sulfur can be scavenged by manganese bearing compounds such as MnO.
  • titanium contributors could include titanite (CaTiSiO 5 ) which is a mineral source of TiO 2 and which would simultaneously contribute calcium to help reduce phosphorous or sulfur, and nickel titanium alloys (such as Nitinol which is a shape memory alloy). Most particularly, the content of titanium in the flux material will be responsive to the amount of titanium in the superalloy composition.
  • titanite CaTiSiO 5
  • nickel titanium alloys such as Nitinol which is a shape memory alloy
  • the flux may contain about 1 wt.% of titanium for a deposited or substrate superalloy material having up to 2 wt.% of titanium, or about 2 wt.% of titanium for superalloy material having 2-4 wt.% of titanium, or about 3 wt.% of titanium for superalloy material having 4-6 wt.% of titanium.
  • An alternate source of aluminum for use in flux materials of the present disclosure is a mineral known as Dawsonite composed of sodium aluminum carbonate hydroxide NaAICO3(OH) 2 .
  • Laser decomposition of Dawsonite forms not only elemental aluminum, carbon monoxide and carbon dioxide, but also hydrogen, which creates a beneficial reducing atmosphere.
  • alloy classification groups contain the enumerated amounts of aluminum and titanium:
  • Other useful compounds include boron carbide, aluminum carbide, silicon carbide, calcium carbide, titanium carbide, vanadium carbide, chromium carbide, zirconium carbide, nickel carbide, hafnium carbide, tungsten carbide, nickel carbonate and titanium aluminide which upon dissociation could add elemental metals and desired carbides and/or carbon reaction with oxygen to produce carbon monoxide and carbon dioxide shielding.
  • constituents in the flux of the present invention which target slag fluidity, formation and detachability may correspond to constituents contained in commercially available fluxes in the proposed and otherwise special fluxes for laser processing.
  • certain fluorides, silicates, aluminates and titanates may be included to ensure that the slag is viscous, has a melting point below that of the base metal, has a density less than that of the base metal, and readily detaches from the deposit upon cooling.
  • Viscosity/fluidity enhancers include metal fluorides such as calcium fluoride (CaF 2 ), cryolite (Na 3 AIF 6 ) and other agents known to enhance viscosity and/or fluidity (e.g., reduced viscosity with CaO, MgO, Na 2 O, K 2 O and increasing viscosity with AI 2 O 3 and TiO 2 ) in welding applications.
  • Shielding agents include metal carbonates such as calcium carbonate (CaCO 3 ), aluminum carbonate (AI 2 (CO 3 ) 3 ), dawsonite
  • Vectoring agents include titanium, zirconium, boron and aluminum containing compounds and materials such as titanium alloys (Ti), titanium oxide (TiO 2 ), titanite (CaTiSiO 5 ), aluminum alloys (Al), aluminum carbonate (AI 2 (CO 3 ) 3 ), dawsonite (NaAI(CO 3 )(OH) 2 ), borate minerals (e.g., kernite, borax, ulexite, colemanite), nickel titanium alloys (e.g., Nitinol), niobium oxides (NbO, NbO 2 , Nb 2 O 5 ) and other metal-containing compounds and materials used to supplement molten alloys with elements.
  • titanium alloys Ti
  • TiO 2 titanium oxide
  • TiSiO 5 titanite
  • Al aluminum alloys
  • Al aluminum carbonate
  • AI 2 (CO 3 ) 3 ) 3 aluminum carbonate
  • Dawsonite NaAI(CO 3 )(OH) 2
  • flux materials of the present disclosure include:
  • the flux materials of the present disclosure include a metal carbide and at least one metal oxide, metal silicate, metal fluoride, metal carbonate, or mixtures thereof.
  • the content of the metal carbide is less than about 10 percent by weight.
  • the content of the metal carbide is equal to or greater than about 0.001 percent by weight and less than about 5 percent by weight.
  • the content of the metal carbide is greater than about 0.01 percent by weight and less than about 2 percent by weight.
  • the content of the metal carbide is between about 0.1 percent and about 3 percent by weight.
  • FIG. 3 illustrates an embodiment where a layer of superalloy material 60 is deposited onto a superalloy substrate 62 using an energy beam such as laser beam 64 to melt a filler material 66.
  • the filler material 66 includes a metal sheath 68 that is constructed of a material that can be conveniently formed into a hollow shape, such as nickel or nickel-chromium or nickel-chromium-cobalt, and a powdered material 70 is selected such that a desired superalloy composition is formed when the filler material 66 is melted by the laser beam 64.
  • the powdered material 70 may include powdered flux as well as alloying elements.
  • the powdered material may be only flux material, or for embodiments where a layer of superalloy cladding material is desired, the powdered material may contain metal powder, either as a separate layer placed under a layer of powdered flux material, or mixed with the powdered flux material, or combined with the flux material into composite particles, such that the melting forms the layer of cladding material on the surface.
  • a feed material may be introduced into the melt pool in the form of a strip or wire.
  • the powdered metal and feed material (if any), as well as any metal contribution from the flux material which may be neutral or additive, are combined in the melt pool to produce a cladding layer having the composition of a desired superalloy material.
  • mixed submerged arc welding flux and alloy 247 powder was pre-placed from 2.5 to 5.5 mm depths and demonstrated to achieve crack free laser clad deposits after final post weld heat treatment.
  • Ytterbium fiber laser power levels from 0.6 up to 2 kilowatts have been used with galvanometer scanning optics making deposits from 3 to 10 mm in width at travel speeds on the order of 125 mm/min. Absence of cracking has been confirmed by dye penetrant testing and metallographic examination of deposit cross sections. It will be appreciated that alloy 247 falls within the most difficult area of the zone of non-weldability as illustrated in FIG. 4.
  • Oxide dispersion strengthened (ODS) superalloy powder may be deposited using laser energy and flux powder in accordance with embodiments of the invention. In particular, it may be appropriate to allow a certain level of oxide formation in the melt to match the base metal composition and properties of ODS alloys. Such deposition may be

Abstract

L'invention concerne des compositions de flux convenant à une utilisation dans des applications de soudage au laser, de réparation et de fabrication d'additifs. Les compositions de flux comprennent 5 à 60 pour cent en poids d'un constituant optiquement transmissif, 10 à 70 pour cent en poids d'un améliorateur de viscosité/fluidité, 0 à 40 pour cent en poids d'un agent de protection, 5 à 30 pour cent en poids d'un agent de piégeage et 0 à 7 pour cent en poids d'un agent de guidage, les pourcentages étant rapportés au poids total de la composition de flux. L'invention concerne également des procédés impliquant la fusion d'un matériau de superalliage en présence d'une composition de flux décrite pour former une masse fondue recouverte d'une couche de laitier en fusion, et en laissant la masse fondue et le laitier en fusion refroidir et se solidifier pour former une couche de superalliage recouverte d'une couche de laitier solide.
EP14752690.9A 2013-07-29 2014-07-29 Flux pour soudage au laser Active EP3027351B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201361859317P 2013-07-29 2013-07-29
US14/341,888 US20150027993A1 (en) 2013-07-29 2014-07-28 Flux for laser welding
PCT/US2014/048543 WO2015017370A2 (fr) 2013-07-29 2014-07-29 Flux pour soudage au laser

Publications (2)

Publication Number Publication Date
EP3027351A2 true EP3027351A2 (fr) 2016-06-08
EP3027351B1 EP3027351B1 (fr) 2020-03-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14752690.9A Active EP3027351B1 (fr) 2013-07-29 2014-07-29 Flux pour soudage au laser

Country Status (6)

Country Link
US (1) US20150027993A1 (fr)
EP (1) EP3027351B1 (fr)
JP (1) JP6388940B2 (fr)
KR (1) KR101936164B1 (fr)
CN (1) CN105431254B (fr)
WO (1) WO2015017370A2 (fr)

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EP3858537A1 (fr) * 2020-01-29 2021-08-04 Lincoln Global, Inc. Systèmes et procédés pour le soudage à l'arc submergé multi-fils à l'aide d'une électrode à fil fourré
EP3995251A1 (fr) * 2020-11-10 2022-05-11 Voestalpine Böhler Welding Belgium s.a. Procédé de dépôt d'un matériau de recouvrement sur une surface métallique au moyen de placage de feuillard sous laitier électroconducteur

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CN105431254A (zh) 2016-03-23
US20150027993A1 (en) 2015-01-29
JP2016533902A (ja) 2016-11-04
EP3027351B1 (fr) 2020-03-11
CN105431254B (zh) 2021-07-02
WO2015017370A2 (fr) 2015-02-05
KR101936164B1 (ko) 2019-01-08
KR20160035076A (ko) 2016-03-30
JP6388940B2 (ja) 2018-09-12
WO2015017370A3 (fr) 2015-07-09

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